lab2 n 3 aye say gang

README.md

@@ -1,4 +1,4 @@
-# flutter_project
+# flutter_project by Gerimovich PIbd-32
 
 A new Flutter project.
 

lib/main.dart

@@ -1,4 +1,13 @@
+import 'dart:math';
 import 'package:flutter/material.dart';
+// Classes +
+// Methods +
+// Enums +
+// Loops +
+// Generics (List<>) +
+// Anonymous functions +
+// Future +
+// Extension +
 
 void main() {
   runApp(const MyApp());
@@ -7,25 +16,21 @@ void main() {
 class MyApp extends StatelessWidget {
   const MyApp({super.key});
 
-    @override
+  @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'Gerimovich demo',
       theme: ThemeData(
-
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.red),
         useMaterial3: true,
       ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      home: const MyHomePage(title: 'Gerimovich I M'),
     );
   }
 }
 
 class MyHomePage extends StatefulWidget {
   const MyHomePage({super.key, required this.title});
-
-      
-        
   final String title;
 
   @override
@@ -33,39 +38,133 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-                                    _counter++;
-    });
+  @override
+  void initState() {
+    super.initState();
   }
 
   @override
   Widget build(BuildContext context) {
-                            return Scaffold(
+    return Scaffold(
       appBar: AppBar(
-                                backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-                        title: Text(widget.title),
+        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
+        title: Text(widget.title),
       ),
-      body: Center(
-                        child: Column(
-                          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
+      body: const StocksWidget(),
+    );
+  }
+}
+
+enum StockCategory { oilgas, finance, mining }
+extension StockCategoryExtension on StockCategory {
+  String get name {
+    switch (this) {
+      case StockCategory.oilgas:
+        return 'Нефтегазовая отрасль';
+      case StockCategory.finance:
+        return 'Банки';
+      case StockCategory.mining:
+        return 'Добыча полезных ископаемых';
+    }
+  }
+}
+
+class Stock {
+  final String name;
+  final double price;
+  final String imageUrl;
+  final StockCategory category;
+
+  Stock({
+    required this.name,
+    required this.price,
+    required this.imageUrl,
+    required this.category,
+  });
+}
+
+class StocksWidget extends StatelessWidget {
+  const StocksWidget({super.key});
+  @override
+  Widget build(BuildContext context) {
+
+    final stocks = [
+      Stock(
+          name: 'Алроса',
+          price: 52.90,
+          imageUrl:
+          'https://data.cbonds.info/organisations_logos/18/1617957662ALROSA_Rus_COLOUR_RGB.jpg',
+          category: StockCategory.mining),
+      Stock(
+          name: 'Газпром',
+          price: 135.43,
+          imageUrl: 'https://data.cbonds.info/organisations_logos/21/21.png',
+          category: StockCategory.oilgas),
+      Stock(
+          name: 'Сбербанк',
+          price: 257.50,
+          imageUrl:
+          'https://data.cbonds.info/organisations_logos/313/1615279834sberbank__2-01.png',
+          category: StockCategory.finance),
+      Stock(
+          name: 'Сбербанк',
+          price: 111111111.111111111,
+          imageUrl:
+          'https://data.cbonds.info/organisations_logos/313/1615279834sberbank__2-01.png',
+          category: StockCategory.finance),
+    ];
+
+    return Center(
+      child: SingleChildScrollView(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            ...stocks.map((e) => StockCard(stock: e)),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class StockCard extends StatelessWidget {
+  final Stock stock;
+  const StockCard({super.key, required this.stock});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      margin: const EdgeInsets.all(8.0),
+      child: Padding(
+        padding: const EdgeInsets.all(14.0),
+        child: Row(
+          children: [
+            Image.network(
+              stock.imageUrl,
+              width: 85,
+              height: 85,
             ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
+            const SizedBox(width: 16.0),
+            Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  stock.name,
+                  style: Theme.of(context).textTheme.headlineSmall,
+                ),
+                Text(
+                  '${stock.price.toStringAsFixed(2)} р',
+                  style: Theme.of(context).textTheme.bodyLarge,
+                ),
+                Text(
+                  stock.category.name,
+                  style: Theme.of(context).textTheme.bodySmall,
+                ),
+              ],
             ),
           ],
         ),
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ),     );
+    );
   }
 }